Bad selector

gistfile1.txt

2011-11-15 13:04:12.310 DropKey[23151:244f] -[NSKeyValueObservationInfo dropKeyFileReaderNotification:]: unrecognized selector sent to instance 0x1001a3f40
2011-11-15 13:04:12.310 DropKey[23151:6713] -[WRACryptoOperation start] [Line 47]
2011-11-15 13:04:12.312 DropKey[23151:244f] An uncaught exception was raised
2011-11-15 13:04:12.322 DropKey[23151:1b6f] -[WRACryptoOperationEncrypting main] [Line 97]
2011-11-15 13:04:12.323 DropKey[23151:244f] -[NSKeyValueObservationInfo dropKeyFileReaderNotification:]: unrecognized selector sent to instance 0x1001a3f40
2011-11-15 13:04:12.325 DropKey[23151:244f] (
	0   CoreFoundation                      0x00007fff8c9e7286 __exceptionPreprocess + 198
	1   libobjc.A.dylib                     0x00007fff94fded5e objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff8ca734ce -[NSObject doesNotRecognizeSelector:] + 190
	3   CoreFoundation                      0x00007fff8c9d4133 ___forwarding___ + 371
	4   CoreFoundation                      0x00007fff8c9d3f48 _CF_forwarding_prep_0 + 232
	5   Foundation                          0x00007fff91508de2 __-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_1 + 47
	6   CoreFoundation                      0x00007fff8c98fe0a _CFXNotificationPost + 2634
	7   Foundation                          0x00007fff914f5097 -[NSNotificationCenter postNotificationName:object:userInfo:] + 65
	8   DropKey                             0x0000000100019791 -[WRADropKeyFileOperation mainReadProcess] + 1393
	9   DropKey                             0x0000000100018e47 -[WRADropKeyFileOperation main] + 151
	10  Foundation                          0x00007fff9154c7fe -[NSThread main] + 68
	11  Foundation                          0x00007fff9154c776 __NSThread__main__ + 1575
	12  libsystem_c.dylib                   0x00007fff942258bf _pthread_start + 335
	13  libsystem_c.dylib                   0x00007fff94228b75 thread_start + 13
)
2011-11-15 13:04:12.338 DropKey[23151:244f] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSKeyValueObservationInfo dropKeyFileReaderNotification:]: unrecognized selector sent to instance 0x1001a3f40'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff8c9e7286 __exceptionPreprocess + 198
	1   libobjc.A.dylib                     0x00007fff94fded5e objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff8ca734ce -[NSObject doesNotRecognizeSelector:] + 190
	3   CoreFoundation                      0x00007fff8c9d4133 ___forwarding___ + 371
	4   CoreFoundation                      0x00007fff8c9d3f48 _CF_forwarding_prep_0 + 232
	5   Foundation                          0x00007fff91508de2 __-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_1 + 47
	6   CoreFoundation                      0x00007fff8c98fe0a _CFXNotificationPost + 2634
	7   Foundation                          0x00007fff914f5097 -[NSNotificationCenter postNotificationName:object:userInfo:] + 65
	8   DropKey                             0x0000000100019791 -[WRADropKeyFileOperation mainReadProcess] + 1393
	9   DropKey                             0x0000000100018e47 -[WRADropKeyFileOperation main] + 151
	10  Foundation                          0x00007fff9154c7fe -[NSThread main] + 68
	11  Foundation                          0x00007fff9154c776 __NSThread__main__ + 1575
	12  libsystem_c.dylib                   0x00007fff942258bf _pthread_start + 335
	13  libsystem_c.dylib                   0x00007fff94228b75 thread_start + 13
)
terminate called throwing an exception[Switching to process 23151 thread 0x244f]
[Switching to process 23151 thread 0x244f]
sharedlibrary apply-load-rules all
(gdb) po 0x1001a3f40
<NSKeyValueObservationInfo 0x1001a3f40> (
<NSKeyValueObservance 0x1001ea9a0: Observer: 0x1001ea660, Key path: compressedSize, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x1001677e0>
<NSKeyValueObservance 0x105004b90: Observer: 0x1001ea660, Key path: uncompressedSize, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x1001805a0>
<NSKeyValueObservance 0x1001e0c60: Observer: 0x1001ea660, Key path: localHeaderOffset, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x100150ae0>
<NSKeyValueObservance 0x1001e0cd0: Observer: 0x1001ea660, Key path: extraField, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x1001c8330>
<NSKeyValueObservance 0x105004c00: Observer: 0x1001ea660, Key path: filename, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x1001d31e0>
<NSKeyValueObservance 0x105004c70: Observer: 0x1001ea660, Key path: comment, Options: <New: YES, Old: NO, Prior: NO> Context: 0x0, Property: 0x1001bc180>
)
Current language:  auto; currently objective-c
(gdb)